- to heat (glass, earthenware, metals, etc.) to remove or prevent internal stress.
- to free from internal stress by heating and gradually cooling.
- to toughen or temper.
- Biochemistry. to recombine (nucleic acid strands) at low temperature after separating by heat.
- to fuse colors onto (a vitreous or metallic surface) by heating.
- an act, instance, or product of annealing.
Origin of anneal
Examples from the Web for annealing
The annealing cannot be carried out in air, owing to the tendency to oxidation.
If the sulphur is kept melted for some time at 125° C. the annealing is not so important.
A good size gas or oil furnace for annealing and case-hardening.The Working of Steel
Fred H. Colvin
We regulate the oven according to what we are annealing in it.The Story of Glass
Sara Ware Bassett
The process is somewhat similar to that employed in annealing glass.
- to temper or toughen (something) by heat treatment
- to subject to or undergo some physical treatment, esp heating, that removes internal stress, crystal defects, and dislocations
- (tr) to toughen or strengthen (the will, determination, etc)
- (often foll by out) physics to disappear or cause to disappear by a rearrangement of atomsdefects anneal out at different temperatures
- an act of annealing
Word Origin and History for annealing
Old English onælan "to set on fire, kindle," from on- "on" + ælan "to burn, bake," from Proto-Germanic *ailan, "probably" [Watkins] from PIE *ai- "to burn" (see ash (n.1)); related to Old English æled "fire, firebrand," Old Norse eldr, Danish ild "fire." Related: Annealed; annealing.